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A gaseous reaction occurs at a constant pressure of 45.0atm and releases 59.4kJ of heat. Before the reaction, the volume of hte system was 6.60L. After the reaction, the volume of the system was 2.00L. Calculate the total internal energy change, Delta U, in kilojoules
ou have the following supplies: 2.00L of 1.00M KH2PO4 stock solution, 1.50L of 1.00M K2HPO4 stock solution, and a carboy of pure distilled H2O . How much 1.00M KH2PO4 will you need to make this solution?
An aqueous antifreeze solution is 48.5% ethylene glycol (C2H6O2) by mass. The density of the solution is 1.062 g/cm3. Calculate the molality, molarity and mole fraction of ethylene glycol
What is the difference between a constitutional isomer and a geometric isomer.
calculate the vapor pressure of a solution of glycerol of 265ml in 3.80x10^2ml of H2O at the normal boiling point of H2O
Draw appropriate Lewis structure and VSEPR structure for oxalate anion. What is the O-C-O bond angle? What is the C-C-O bond angle? What is the hybridization of each carbon? On which atoms does the negative charge reside? Draw all resonance struct..
A sample of 2.376 g ether (The compound known as diethyl ether [(C2H5)2O], commonly referred to as ether, contains carbon, hydrogen, and oxygen) was combusted in an oxygen rich environment to produce 2.887 g of H2O (g) and 5.643 g of CO2 (g).
process it is given that Rubidium has a heat of vaporization =69.0 kJ/mol at its boiling pt= (686°C). Compute ΔS for this process?
how much energy is required to heat an iron nail with a mass of 7g from 25 degrees celcius until it becomes red hot at 750 degrees celcius?
Describe spectroscopic or chemical tests to distinguish between the following pairs of compounds
Caffeine is made up of 49.5% C, 5.2% H, 16.5%O, and 28.9% N. A solution made up of 8.25g of caffeine and 100.0 of benzene (d=0.887g/ml) freezes at 3.03C.
Determine E° for the reduction half-reaction Ce4+(aq) + e- → Ce3+(aq), given that the cell voltage for the following voltaic cell is E°cell = 1.887 V:
In the bromination of ethane (C2H6) reaction, one wants to produce 10.0 g of C2H5Br product. How many grams of C2H6 would be needed to react with excess Br2.
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